Browsing archives for 'Estimation'

In this variation of the Cafe Wall illusion, created by Alan Stubbs, the vertical gray lines between the black and white squares appear to be quite wavy. If you take a straight edge (like a sheet of paper or a ruler), however, and hold it up to the lines, you will find that they are […]

This brief video shows a pair of circles that appear to be very warped or distorted. Using circles cut out from a sheet of white paper, the creator of this video demonstrates that there is nothing warped about them at all. Even after you know the truth, once the white circle cut outs are removed, […]

In this new twist on an old optical illusion, two spaceships can be seen flying through a wormhole. The spaceship in the front appears to be significantly smaller (maybe half as big?) than the one behind it. Surprisingly, however, both spaceships are the exact same size. The wings of the spaceship in the back are […]

The sphere that is placed closest to you looks to be about half the size as the sphere in the background. Surprisingly, both spheres are exactly the same size. If you don’t believe it, grab a ruler and measure them both to confirm. For a similar effect, be sure to revisit the SUV Illusion where […]

In this brief video from Scientific American, the Ames Room illusion is demonstrated and then completely revealed. If you are not familiar with an Ames Room, first have a look at this vintage Ames Room illusion photograph. Now watch the video and see exactly how this trick is done.

Today’s illusion comes to us straight from the “Roaring ’20s”. It is the 18th card in a series of 25 optical illusion cards published in 1926 by Major Drapkin & Co (London) which was a branch of The United Kingdom Tobacco Co Ltd. The reverse side of the card contains the following: Which is […]

Last week, we posted the first place winner of the 2014 Best Illusion of the Year Contest. Today’s illusion is the third place winner called ‘A Turn in the Road’ by Kimberley D. Orsten and James R. Pomerantz from Rice University in Houston, Texas. This illusion video shows three images, two of which are matching images […]